212222120987 has 2 divisors, whose sum is σ = 212222120988. Its totient is φ = 212222120986.

The previous prime is 212222120983. The next prime is 212222120993. The reversal of 212222120987 is 789021222212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212222120987 - 2² = 212222120983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212222120987.

It is not a weakly prime, because it can be changed into another prime (212222120983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106111060493 + 106111060494.

It is an arithmetic number, because the mean of its divisors is an integer number (106111060494).

Almost surely, 2^212222120987 is an apocalyptic number.

212222120987 is a deficient number, since it is larger than the sum of its proper divisors (1).

212222120987 is an equidigital number, since it uses as much as digits as its factorization.

212222120987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 212222120987 in words is "two hundred twelve billion, two hundred twenty-two million, one hundred twenty thousand, nine hundred eighty-seven".